---
product_id: 740282171
title: "4-in-1 Plug in Combination Gas & Carbon Monoxide Detector, CO Alarm with Fahrenheit(°F) & Humidity LCD Display for Home and Travel (1 Pack)"
brand: "jnhcd"
price: "€ 34.11"
currency: EUR
in_stock: true
reviews_count: 8
url: https://www.desertcart.ie/products/740282171-4-in-1-plug-in-combination-gas-and-carbon-monoxide
store_origin: IE
region: Ireland
---

# ±2% electrochemical sensor accuracy 85dB loud audio & flashing alarm 4-in-1 real-time gas & CO detection 4-in-1 Plug in Combination Gas & Carbon Monoxide Detector, CO Alarm with Fahrenheit(°F) & Humidity LCD Display for Home and Travel (1 Pack)

**Brand:** jnhcd
**Price:** € 34.11
**Availability:** ✅ In Stock

## Summary

> 🚨 Stay ahead of danger with smart, sleek safety!

## Quick Answers

- **What is this?** 4-in-1 Plug in Combination Gas & Carbon Monoxide Detector, CO Alarm with Fahrenheit(°F) & Humidity LCD Display for Home and Travel (1 Pack) by jnhcd
- **How much does it cost?** € 34.11 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/740282171-4-in-1-plug-in-combination-gas-and-carbon-monoxide)

## Best For

- jnhcd enthusiasts

## Why This Product

- Trusted jnhcd brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact & Travel-Ready:** Sleek, portable design with easy-to-read display perfect for home, kitchen, RV, or on-the-go
- • **Plug & Play Convenience:** Universal US 110V-220V AC compatibility for instant, hassle-free installation
- • **Precision You Can Trust:** Electrochemical sensor delivers ultra-fast response within 15 seconds and ±2% accuracy
- • **All-in-One Safety Monitor:** Combustible gas, CO, temperature & humidity tracked 24/7 on vibrant color LCD
- • **Instant Alerts, No Compromise:** Over 85dB audio alarm paired with flashing red light ensures you never miss a danger signal

## Overview

The JNHCD 4-in-1 Plug-in Detector combines combustible gas, carbon monoxide, temperature, and humidity monitoring in one compact device. Featuring a high-precision electrochemical sensor with ±2% accuracy and a rapid ≤15-second response time, it provides real-time safety alerts via a bright color LCD and an 85dB audio-visual alarm. Designed for effortless plug-and-play use across all US 110V-220V sockets, this portable detector is ideal for home, kitchen, RV, or travel, ensuring you’re always protected with instant, reliable warnings.

## Description

4-in-1 Plug in Combination Gas & Carbon Monoxide Detector, CO Alarm with Fahrenheit(°F) & Humidity LCD Display for Home and Travel (1 Pack)

## Features

- 【4-IN-1 REAL-TIME MONITORING】Combustible gas/CO/temperature/humidity detection with high-precison sensor. Color LCD displays 24/7 readings for home/kitchen/RV safety
- 【RELIABLE SENSOR】Equipped with electrochemical sensor with ±2% accuracy. Faster response (≤15s) than standard detectors
- 【Easy to Use】Plug and play, easy to install and easy to read. US Standard plug All 110V - 220V AC sockets can be used.
- 【Audio & Visual Alarm】When the flammable gas or carbon monoxide reaches a certain level, this plug-in monitor will activate an over 85dB audio alarm and a continuously flashing red light, providing timely alerts to any potential danger.
- 【Compact Design】Small and portable, the big color LCD makes it easy to read even at night.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | JNHCD |
| Style | 4-IN-1 Detector |
| Power Source | AC |
| Product Dimensions | 4.72"D x 1.93"W x 2.05"H |
| Alarm | Audible |
| Number of Items | 1 |
| Manufacturer | Shenzhen Kanghua Shengshi industrial Co., LTD |
| Part Number | KH158 |
| Item Weight | 3.2 ounces |
| Item model number | KH158 |
| Size | 1 PACK |
| Batteries Required? | No |

## Product Details

- **Brand:** JNHCD
- **Style:** 4-IN-1 Detector
- **Power Source:** AC
- **Product Dimensions:** 4.72"D x 1.93"W x 2.05"H
- **Alarm:** Audible
- **Number of Items:** 1
- **Manufacturer:** Shenzhen Kanghua Shengshi industrial Co., LTD

## Images

![4-in-1 Plug in Combination Gas & Carbon Monoxide Detector, CO Alarm with Fahrenheit(°F) & Humidity LCD Display for Home and Travel (1 Pack) - Image 1](https://m.media-amazon.com/images/I/71yV-bJ3fjL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: How does the alarm differentiate between gas leaks and false alarms?**
A: The detector uses smart electrochemical sensors to trigger alarms only when gas exceeds safe levels (≥150ppm CO or ≥5%LEL methane). Persistent alerts require immediate ventilation and appliance inspection. ​​

**Q: Can this detector work during a power outage?​​**
A: No. This plug-in model requires constant power. For backup protection, install battery-operated detectors in other rooms as recommended by safety guidelines. ​​

**Q: Will the alarm wake heavy sleepers?​​**
A: Yes. Its 85dB+ siren (louder than a vacuum) and flashing lights ensure wake-up alerts. Test monthly via the "Self-test" button to verify functionality. ​​

**Q: What does "Err" on the display mean?​​**
A: This indicates a sensor error. Unplug for 30 seconds to reset. If it persists, relocate the device away from steam/heat and contact customer support. ​​

**Q: How do I maintain the detector?**
A: Test monthly with the self-test button, clean sensors gently with a dry cloth, keep vents unobstructed, and avoid high humidity areas for accurate readings.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Must have carbon monoxide detector
*by T***  on June 19, 2025*

Carbon monoxide detectors I have a older camper and I have been looking for a new one to add to my camper and I came across this and thought to myself why not give this one and try because it just plug in to a outlet and it was very easy to install and this really has giving me the peace of mind and knowing there is a alarm in it so I would woke up it’s very easy to read so if you looking for a new carbon monoxide detector this is well worth the money to give you that peace of mind that your family is protected

### ⭐⭐⭐⭐⭐ Great for traveling!
*by J***  on June 18, 2025*

I like this one because it tests carbon monoxide and gas. It’s great that you can plug it in so you can put it anywhere and it’s small so it looks better than the ones that you have to mount on the wall. I got it mostly for traveling through after hearing about some people getting carbon monoxide poisoning in hotel rooms.

### ⭐⭐⭐⭐⭐ Need this
*by H***4 on June 23, 2025*

Love these I bought a few of these to have on each floor of my house and when I travel. I’m going to get these for my kids house. A must have!

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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-01-31*